I made a choc cobbler tonight and while it tastes good (i tested to see if its done) its REALLY runny. Is that normal??? Heres the recipe: [It originally called for self rising flour but I read a comment from the recipe and just followed it. The person who wrote the comment said she just added 1cup All Purpose flour and baking powder instead]

1. Preheat the oven to 350 degrees F (175 degrees C). Melt butter in an 8x8 inch baking dish while the oven preheats.
2. In a medium bowl, stir together the flour, 3/4 cup sugar, and 1 1/2 tablespoons cocoa. Stir in milk and vanilla until smooth. Spoon this batter over the melted butter in the baking dish.
3. Stir together the remaining cup of sugar and 1/4 cup cocoa powder. Sprinkle over the batter. Slowly pour boiling water over the top of the mixture.
4. Bake for 30 minutes in the preheated oven, until set. Serve slightly warm with ice cream.